Method for preventing mutual interference between radars, signal processing device and radar

Abstract

The present invention provides a method for resisting mutual interference between radars, a signal processing device and a radar, the method comprising: sending a communication signal carrying local identification information and local detection working parameters in a communication mode, and sending a detection signal in a detection mode to detect a target; obtaining an echo communication signal, and obtaining radar communication information according to the echo communication signal, the radar communication information including radar identification information and a first detection working parameter; if the radar identification information is inconsistent with the local identification information and the first detection working parameter is consistent with the local detection working parameter, adjusting the local detection working parameter so that the local detection working parameter is different from the first detection working parameter. Through the above scheme, the present application can stagger the local detection working parameters with the first detection working parameters of other radars, thereby achieving the effect of resisting mutual interference between radars and improving radar detection performance.

Description

Technical Field

[0001] The present invention relates to the field of radar technology, and in particular to a method for preventing mutual interference between radars, a signal processing device and a radar. Background Art

[0002] With the widespread application of commercial radar technology in the fields of automobiles, transportation, security, smart homes, etc., the probability of mutual interference between radars is increasing. For example, when two cars equipped with 77G forward-facing radars meet head-on, there is a possibility of mutual interference: on the one hand, the interference signal may increase the noise of the radar receiver and cause missed alarms; on the other hand, the interference signal may cause the radar to mistakenly think it is a target, causing a false alarm.

[0003] At present, radar designers generally use the method of identifying the amplitude of the received signal to determine the presence of interference, and use filtering to weaken the impact of interference. However, if the interference signal and the local signal have a high degree of overlap, the above method cannot accurately detect it. Summary of the invention

[0004] In view of this, the present invention provides a method for preventing mutual interference between radars, a signal processing device and a radar, which can solve the problem of poor anti-interference effect between radars when the signal overlap is high.

[0005] In a first aspect, an embodiment of the present invention provides a method for preventing mutual interference between radars, wherein the radar includes a communication mode and a detection mode, and the execution subject of the method is a signal processing device of the radar, wherein the signal processing device sends a communication signal carrying identification information of the radar and detection working parameters of the radar in the communication mode, and sends a detection signal in the detection mode to detect a target;

[0006] The method for preventing mutual interference between radars comprises the following steps:

[0007] Acquire an echo communication signal, and acquire radar communication information according to the echo communication signal, wherein the radar communication information includes radar identification information and a first detection working parameter; the first detection working parameter is a working parameter of the radar corresponding to the echo communication signal in a detection mode;

[0008] If the radar identification information is inconsistent with the local identification information and the first detection operating parameter is consistent with the local detection operating parameter, the local detection operating parameter is adjusted to make the local detection operating parameter different from the first detection operating parameter.

[0009] In a second aspect, an embodiment of the present invention provides a signal processing device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method described in any possible implementation of the first aspect when executing the computer program.

[0010] In a third aspect, an embodiment of the present invention provides a radar, comprising: a transmitter, a receiver, a frequency source, a transmitting antenna, a receiving antenna, and a signal processing device as described in the second aspect;

[0011] The signal processing device is connected to the receiver and the frequency source respectively; the frequency source is connected to the transmitter and the receiver respectively; the transmitter is connected to the transmitting antenna, and the receiver is connected to the receiving antenna.

[0012] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0013] The embodiment of the present invention first sends a communication signal carrying the local identification information and the local detection working parameters in the communication mode, and sends a detection signal in the detection mode to detect the target; obtains the echo communication signal, and obtains the radar communication information according to the echo communication signal, the radar communication information includes the radar identification information and the first detection working parameter; the first detection working parameter is the working parameter of the radar corresponding to the echo communication signal in the detection mode; if the radar identification information is inconsistent with the local identification information and the first detection working parameter is consistent with the local detection working parameter, then adjust the local detection working parameter so that the local detection working parameter is different from the first detection working parameter. Through the above scheme, this embodiment can stagger the local detection working parameter with the first detection working parameter of other radars when receiving other radar signals whose first detection working parameters are the same as the local detection working parameters, thereby achieving the effect of anti-mutual interference between radars and improving radar detection performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 is an application scenario diagram of the method for preventing mutual interference between radars provided by an embodiment of the present invention;

[0016] Figure 2 is a flow chart of an implementation method for preventing mutual interference between radars provided by an embodiment of the present invention;

[0017] Figure 3 is a schematic diagram of a communication coded signal and a modulated signal thereof provided by an embodiment of the present invention;

[0018] Figure 4 It is a time-frequency schematic diagram of a transmitted signal when the communication mode and the detection mode provided by an embodiment of the present invention work simultaneously;

[0019] Figure 5 It is a time-frequency schematic diagram of a transmitted signal when the communication mode and the detection mode provided in an embodiment of the present invention adopt the same channel;

[0020] Figure 6 is a schematic diagram of a signal processing device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0021] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clear, specific embodiments will be described below in conjunction with the accompanying drawings.

[0023] Figure 1 FIG. 1 is an application scenario diagram of the method for preventing mutual interference between radars provided in an embodiment of the present invention. Figure 1 As shown, the radar 10 includes:

[0024] Transmitter 103, receiver 104, frequency source 102, transmitting antenna 105, receiving antenna 106 and signal processing device 101;

[0025] The signal processing device 101 is connected to the receiver 104 and the frequency source 102 respectively; the frequency source 102 is connected to the transmitter 103 and the receiver 104 respectively; the transmitter 103 is connected to the transmitting antenna 105, and the receiver 104 is connected to the receiving antenna 106.

[0026] When the radar performs conventional detection, the frequency source 102 is used to generate a transmitting local oscillator and a receiving local oscillator, and sends the transmitting local oscillator to the transmitter 103 and the receiving local oscillator to the receiver 104. The transmitter 103 modulates the transmitting local oscillator into a detection signal and transmits it through the transmitting antenna 105. The receiving antenna 106 sends the electromagnetic echo signal in space to the receiver 104. The receiver 104 uses the receiving local oscillator to convert the echo signal into an intermediate frequency baseband signal and sends it to the signal processing device 101 for processing. The signal processing device 101 processes the received intermediate frequency baseband signal from an analog signal into radar detection data.

[0027] The method for preventing mutual interference between radars provided in this embodiment is performed by the signal processing device 101. The signal processing device sends a communication signal carrying the local identification information and the local detection working parameters in the communication mode, and sends a detection signal to detect the target in the detection mode.

[0028] In this embodiment, the signal processing device 101 provided in this embodiment integrates a processor and a signal processing function. In order to achieve the effect of anti-mutual interference between radars, this embodiment adds a communication mode on the basis of the original radar detection mode, wherein the detection mode is a working mode for obtaining radar detection data, and the communication mode is a working mode for realizing communication identification between radars.

[0029] In the communication mode, the signal processing device transmits a communication signal through the cooperation of other structures in the radar. The communication signal is used for other radars to receive it, and the other radars determine whether the working parameters of the two radars in the detection mode are the same based on the received communication signal.

[0030] See also Figure 2 , which shows a flowchart of the implementation of the method for preventing mutual interference between radars provided by an embodiment of the present invention, and is described in detail as follows:

[0031] S101: Acquire an echo communication signal, and acquire radar communication information according to the echo communication signal, wherein the radar communication information includes radar identification information and a first detection working parameter; the first detection working parameter is a working parameter of the radar corresponding to the echo communication signal in a detection mode.

[0032] In this embodiment, the echo communication signal is an electromagnetic signal. When the echo communication signal is received in space, the receiver 104 demodulates the echo communication signal into an echo coded signal and sends the echo coded signal to the signal processing device 101. The signal processing device 101 decodes the echo coded signal to obtain radar communication information.

[0033] S102: If the radar identification information is inconsistent with the local identification information and the first detection working parameter is consistent with the local detection working parameter, adjust the local detection working parameter to make the local detection working parameter different from the first detection working parameter.

[0034] In this embodiment, if the signal processing device recognizes that the radar identification information carried by the external incoming signal is inconsistent with the identification information of this machine, it means that the signal is emitted by other radars. At this time, if the first detection working parameter is consistent with the detection working parameter of this machine, it means that the working parameters of the signals emitted in the detection mode of other radars are the same as the signals emitted in the detection mode of this application. The local radar will be interfered by other radar signals in the detection space. Therefore, the signal processing device 101 can stagger the radars that interfere with each other by adjusting the detection working parameters of the local machine, so as to avoid the degradation of radar detection performance and functional abnormality.

[0035] In this embodiment, if the radar identification information is the same as the local identification information, it means that the echo communication signal is the echo signal of the local transmission signal, so the local does not act. If the radar identification information is different from the local identification information and the first detection working parameter is different from the local detection working parameter, it means that the signals transmitted by other radars will not interfere with the local signal, so the local does not act.

[0036] It can be seen from the above embodiments that the embodiments of the present invention first send a communication signal carrying the local identification information and the local detection working parameters in the communication mode, and send a detection signal in the detection mode to detect the target; obtain the echo communication signal, and obtain the radar communication information according to the echo communication signal, the radar communication information includes the radar identification information and the first detection working parameter; the first detection working parameter is the working parameter of the radar corresponding to the echo communication signal in the detection mode; if the radar identification information is inconsistent with the local identification information and the first detection working parameter is consistent with the local detection working parameter, then adjust the local detection working parameter so that the local detection working parameter is different from the first detection working parameter. Through the above scheme, this embodiment can stagger the local detection working parameter with the first detection working parameter of other radars when receiving other radar signals whose first detection working parameters are the same as the local detection working parameters, thereby achieving the effect of anti-mutual interference between radars and improving radar detection performance.

[0037] In one embodiment, the radar further includes a frequency source and a transmitter; the specific implementation process of the signal processing device sending a communication signal carrying the local identification information and the local detection working parameters in the communication mode includes:

[0038] S201: Setting communication signal transmission band information and communication signal transmission time period;

[0039] S202: Generate a coding generation instruction according to the communication signal transmission band information and the communication signal transmission time period; and send the coding generation instruction to the frequency source, wherein the coding generation instruction is used to instruct the frequency source to generate a communication coding signal, and modulate the communication coding signal into the communication signal through a transmitter and then transmit it.

[0040] Specifically, in the communication mode, the signal processing device 101 generates a coding generation instruction by setting the communication signal transmission band information and the communication signal transmission period, and sends the coding generation instruction to the frequency source 102. The frequency source 102 encodes the local identification information and the local detection working parameters into a binary communication coding signal according to the coding generation instruction. Figure 3 As shown, Figure 3 The digital wave in is the communication coding signal. The identification information of the local machine can be the radar ID (Identity document) of the local machine, and the detection working parameters of the local machine include the transmission period and transmission frequency band information of the signal of the local radar in the detection mode. The frequency source 102 sends the communication coding signal as the transmission local oscillator in the communication mode to the transmitter 103, and the transmitter 103 modulates the communication coding signal to obtain the communication signal, and sends the communication signal through the transmitting antenna 105.

[0041] Specifically, Figure 3 As shown, the transmitter 103 can perform frequency modulation, amplitude modulation and phase modulation on the communication coded signal.

[0042] In one embodiment, the local detection working parameters include the local detection signal transmission period and the local detection signal transmission frequency band information; the specific implementation process of the above S201 includes:

[0043] If the local detection signal transmission band information is the same as the communication signal transmission band information, setting the communication signal transmission time period to be non-overlapping with the local detection signal transmission time period;

[0044] If the transmission band information of the local detection signal is different from the transmission band information of the communication signal, the communication signal transmission time period is randomly set.

[0045] In this embodiment, the detection mode and communication mode of the radar can work in time-sharing mode. When the radar works in the detection mode, the communication function is not performed, and when the radar works in the communication mode, the detection function is not performed.

[0046] Specifically, when the detection mode and the communication mode work in time-sharing mode, the transmission band information of the local detection signal in the detection mode is the same as the transmission band information of the communication signal in the communication mode, that is, the signal corresponding to the detection mode and the signal corresponding to the communication mode can be transmitted / received using the same channel, and the transmission period of the signal in the detection mode and the transmission period of the signal in the communication mode are staggered to realize the transmission and reception of multiple signals in the same channel, such as Figure 4 shown.

[0047] In this embodiment, the detection mode and communication mode of the radar can also be in working state at the same time.

[0048] Specifically, when the detection mode and the communication mode are working at the same time, the transmission band information of the local detection signal in the detection mode needs to be different from the transmission band information of the communication signal in the communication mode, that is, the signal corresponding to the detection mode and the signal corresponding to the communication mode use different channels. In this case, the transmission period of the local detection signal in the detection mode and the transmission period of the communication signal in the communication mode can be randomly set, such as Figure 5 shown.

[0049] In one embodiment, when the transmission band information of the local detection signal is different from the transmission band information of the communication signal, the echo communication signal is received through the first channel of the radar, and the echo detection signal corresponding to the detection signal is received through the second channel of the radar.

[0050] In this embodiment, the receiver includes a multi-channel receiver; the multi-channel receiver includes a first channel and a second channel;

[0051] If the transmission band information of the local detection signal is different from the transmission band information of the communication signal, the echo communication signal is received using the first channel of the multi-channel receiver; the echo detection signal is received using the second channel of the multi-channel receiver, and the echo detection signal is the echo signal of the detection signal emitted by the radar in the detection mode.

[0052] In one embodiment, the transmitter 103 may include a first transmitting unit and a second transmitting unit. If the transmission band information of the local detection signal is different from the transmission band information of the communication signal, the first transmitting unit is used to implement the modulation processing of the communication coding signal in the communication mode, and the second transmitting unit is used to implement the modulation processing of the frequency modulation signal in the detection mode.

[0053] In one embodiment, the specific implementation process of S102 includes:

[0054] Sending a frequency generation instruction to the frequency source in the communication mode, wherein the frequency generation instruction is used to instruct the frequency source to generate a frequency signal and send the frequency signal to the receiver;

[0055] The echo coded signal returned by the receiver is acquired, and the echo coded signal is decoded to obtain the radar communication information; the echo coded signal is obtained by the receiver demodulating the echo communication signal using the point frequency signal.

[0056] In this embodiment, in the communication mode, the signal processing device 101 is also used to control the frequency source 102 to generate a point frequency signal. The frequency source 102 sends the point frequency signal to the receiver 104 as a receiving local oscillator in the communication mode. The receiver 104 demodulates the echo communication signal according to the point frequency signal to obtain an echo coded signal, and sends the echo coded signal to the signal processing device 101. The signal processing device 101 processes the echo coded signal to obtain radar communication information.

[0057] In one embodiment, the local detection working parameters include the local detection signal transmission time period and the local detection signal transmission frequency band information; the first detection working parameters include the first detection signal transmission time period and the first detection signal transmission frequency band information;

[0058] The specific implementation process of S103 includes:

[0059] adjusting the local detection signal transmission period so that the adjusted local detection signal transmission period is different from the first detection signal transmission period, and / or:

[0060] The local detection signal transmission band information is adjusted so that the adjusted local detection signal transmission band information is different from the first detection signal transmission band information.

[0061] In this embodiment, when the first detection working parameters of other radars are the same as the detection working parameters of this machine, the detection working parameters of this machine are adjusted. When adjusting the detection working parameters of this machine, the signals of other radars can be staggered in time by adjusting the transmission time period of the detection signal of this machine; the signals of other radars can be staggered in frequency dimension by adjusting the transmission band information of the detection signal of this machine; and the transmission band information of the detection signal of this machine and the transmission time period of the detection signal of this machine can be adjusted at the same time to stagger the signals of other radars in both time and frequency dimensions.

[0062] In one embodiment, the first detection working parameter includes first detection signal transmission band information, and the local detection working parameter includes local detection signal transmission band information;

[0063] The specific implementation process of S103 includes:

[0064] If the radar identification information is inconsistent with the local aircraft identification information and the first detection signal transmission band information is the same as the local aircraft detection signal transmission band information, the local aircraft detection signal transmission band information is adjusted.

[0065] In this embodiment, in order to avoid mutual interference between radars, if the detection signal transmission band information of two different radars is the same, the detection signal transmission band information of the local radar is adjusted.

[0066] In one embodiment, the specific implementation process of S103 further includes: acquiring a corresponding working parameter variation according to the local identification information, and adjusting the local detection working parameter by using the working parameter variation.

[0067] In this embodiment, in order to prevent the detection signal working parameters of two mutually interfering radars from being the same after the frequency modulation operation, this embodiment inputs the local identification information into the parameter change rate calculation formula to obtain the corresponding working parameter change amount, and then adds the working parameter change amount to the local detection working parameter to obtain the adjusted local detection working parameter. Since the identification information of each radar is different, the method of adjusting the detection signal working parameters using the radar identification information can avoid the problem of the parameters being consistent after adjustment as much as possible, thereby improving the anti-interference effect.

[0068] In one embodiment, the method provided in this embodiment further includes:

[0069] In the detection mode, the adjusted local detection working parameters are used to generate a frequency modulation signal generation instruction, and the frequency modulation signal generation instruction is sent to the frequency source, the frequency modulation signal generation instruction is used to instruct the frequency source to generate a corresponding frequency modulation signal according to the adjusted local detection working parameters in the detection mode, and send the frequency modulation signal to the transmitter and the receiver respectively, so that the transmitter modulates the frequency modulation signal into a detection signal and then transmits it, and the receiver uses the frequency modulation signal to demodulate the echo detection signal to obtain an intermediate frequency baseband signal;

[0070] The intermediate frequency baseband signal returned by the receiver is acquired, and signal processing is performed on the intermediate frequency baseband signal to obtain radar detection data.

[0071] Specifically, in the detection mode, the signal processing device 101 sends an FM signal generation instruction to the frequency source 102, and the frequency source 102 generates an FM signal according to the FM signal generation instruction, and sends the FM signal as a transmitting local oscillator in the detection mode to the transmitter 103, and the transmitter 103 modulates the FM signal to obtain a detection signal, and radiates the detection signal to space using the transmitting antenna 105, and the frequency source 102 also sends the FM signal as a receiving local oscillator in the detection mode to the receiver 104, and when the receiver 104 receives the echo detection signal sent by the antenna, it processes the echo detection signal using the FM signal to obtain an intermediate frequency baseband signal, and sends the intermediate frequency baseband signal to the signal processing device 101, and the signal processing device obtains radar detection data according to the intermediate frequency baseband signal. The radar detection data includes information such as the distance, speed and angle of the target.

[0072] Specifically, the frequency modulation signal may be a linear frequency modulation signal.

[0073] Through the above scheme, this embodiment can realize the radar detection function while avoiding mutual interference between radars, thereby improving the anti-interference capability of the radar.

[0074] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0075] The following is an embodiment of the device of the present invention. For details not described in detail, reference may be made to the corresponding method embodiments described above.

[0076] In one embodiment, the radar includes a communication mode and a detection mode. The execution subject of the method is a signal processing device of the radar. The signal processing device includes a communication signal transmitting module, which is used to send a communication signal carrying identification information and detection working parameters of the local machine in the communication mode; a detection signal transmitting module, which is used to send a detection signal in the detection mode to perform target detection;

[0077] An embodiment of the present invention provides a device for preventing mutual interference between radars, including:

[0078] A radar communication information acquisition module, used to acquire an echo communication signal, and acquire radar communication information according to the echo communication signal, wherein the radar communication information includes radar identification information and a first detection working parameter; the first detection working parameter is a working parameter of the radar corresponding to the echo communication signal in a detection mode;

[0079] The parameter adjustment module is used to adjust the local detection working parameter if the radar identification information is inconsistent with the local identification information and the first detection working parameter is consistent with the local detection working parameter, so that the local detection working parameter is different from the first detection working parameter.

[0080] In one embodiment, the radar further includes a frequency source and a transmitter; the communication signal transmission module includes:

[0081] A communication parameter setting unit, used to set the communication signal transmission band information and the communication signal transmission time period;

[0082] A coding generation instruction acquisition unit is used to generate a coding generation instruction according to the communication signal transmission band information and the communication signal transmission time period; and send the coding generation instruction to the frequency source, wherein the coding generation instruction is used to instruct the frequency source to generate a communication coding signal, and modulate the communication coding signal into the communication signal through a transmitter and then transmit it.

[0083] In one embodiment, the local detection working parameters include the local detection signal transmission period and the local detection signal transmission frequency band information; the communication parameter setting unit includes:

[0084] If the local detection signal transmission band information is the same as the communication signal transmission band information, setting the communication signal transmission time period to be non-overlapping with the local detection signal transmission time period;

[0085] If the transmission band information of the local detection signal is different from the transmission band information of the communication signal, the communication signal transmission time period is randomly set.

[0086] In one embodiment, when the transmission band information of the local detection signal is different from the transmission band information of the communication signal, the echo communication signal is received through the first channel of the radar, and the echo detection signal corresponding to the detection signal is received through the second channel of the radar.

[0087] In one embodiment, the radar further includes a frequency source and a receiver; a radar communication information acquisition module, specifically used for:

[0088] Sending a frequency generation instruction to the frequency source in the communication mode, wherein the frequency generation instruction is used to instruct the frequency source to generate a frequency signal and send the frequency signal to the receiver;

[0089] The echo coded signal returned by the receiver is acquired, and the echo coded signal is decoded to obtain the radar communication information; the echo coded signal is obtained by the receiver demodulating the echo communication signal using the point frequency signal.

[0090] In one embodiment, the local detection working parameters include the local detection signal transmission time period and the local detection signal transmission frequency band information; the first detection working parameters include the first detection signal transmission time period and the first detection signal transmission frequency band information; the parameter adjustment module includes:

[0091] adjusting the local detection signal transmission period so that the adjusted local detection signal transmission period is different from the first detection signal transmission period, and / or:

[0092] The local detection signal transmission band information is adjusted so that the adjusted local detection signal transmission band information is different from the first detection signal transmission band information.

[0093] In one embodiment, the radar communication information acquisition module is further used to:

[0094] The corresponding working parameter variation is acquired according to the local identification information, and the local detection working parameter is adjusted by using the working parameter variation.

[0095] In one embodiment, the radar further includes a frequency source, a transmitter and a receiver; the radar anti-mutual interference device provided in this embodiment also includes:

[0096] In the detection mode, the adjusted local detection working parameters are used to generate a frequency modulation signal generation instruction, and the frequency modulation signal generation instruction is sent to the frequency source, the frequency modulation signal generation instruction is used to instruct the frequency source to generate a corresponding frequency modulation signal according to the adjusted local detection working parameters, and the frequency modulation signal is sent to the transmitter and the receiver respectively, so that the transmitter modulates the frequency modulation signal into a detection signal and then transmits it, and the receiver uses the frequency modulation signal to demodulate the echo detection signal to obtain an intermediate frequency baseband signal;

[0097] The intermediate frequency baseband signal returned by the receiver is acquired, and signal processing is performed on the intermediate frequency baseband signal to obtain radar detection data.

[0098] It can be seen from the above embodiments that the embodiments of the present invention first send a communication signal carrying the local identification information and the local detection working parameters in the communication mode, and send a detection signal in the detection mode to detect the target; obtain the echo communication signal, and obtain the radar communication information according to the echo communication signal, the radar communication information includes the radar identification information and the first detection working parameter; the first detection working parameter is the working parameter of the radar corresponding to the echo communication signal in the detection mode; if the radar identification information is inconsistent with the local identification information and the first detection working parameter is consistent with the local detection working parameter, then adjust the local detection working parameter so that the local detection working parameter is different from the first detection working parameter. Through the above scheme, this embodiment can stagger the local detection working parameter with the first detection working parameter of other radars when receiving other radar signals whose first detection working parameters are the same as the local detection working parameters, thereby achieving the effect of anti-mutual interference between radars and improving radar detection performance.

[0099] This embodiment provides a radar 10, which includes: a transmitter 103, a receiver 104, a frequency source 102, a transmitting antenna 105, a receiving antenna 106 and the signal processing device 101 as described above;

[0100] The signal processing device 101 is connected to the receiver 104 and the frequency source 102 respectively; the frequency source 102 is connected to the transmitter 103 and the receiver 104 respectively; the transmitter 103 is connected to the transmitting antenna 105, and the receiver 104 is connected to the receiving antenna 106.

[0101] Figure 6 FIG. 1 is a schematic diagram of a signal processing device 101 provided in an embodiment of the present invention. Figure 6 As shown, the signal processing device 101 of this embodiment includes: a processor 60, a memory 61, and a computer program 62 stored in the memory 61 and executable on the processor 60. When the processor 60 executes the computer program 62, the steps in the above-mentioned embodiments of the method for preventing mutual interference between radars are implemented, such as Figure 2 Alternatively, when the processor 60 executes the computer program 62, the functions of the modules / units in the above-mentioned device embodiments are realized.

[0102] Exemplarily, the computer program 62 may be divided into one or more modules / units, which are stored in the memory 61 and executed by the processor 60 to implement the present invention. The one or more modules / units may be a series of computer program instruction segments capable of implementing specific functions, which are used to describe the execution process of the computer program 62 in the signal processing device 101.

[0103] The signal processing device 101 may include, but is not limited to, a processor 60 and a memory 61. Those skilled in the art will appreciate that Figure 6 It is only an example of the signal processing device 101 and does not constitute a limitation of the signal processing device 101. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the signal processing device 101 may also include input and output devices, network access devices, buses, etc.

[0104] The processor 60 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0105] The memory 61 may be an internal storage unit of the signal processing device 101, such as a hard disk or memory of the signal processing device 101. The memory 61 may also be an external storage device of the signal processing device 101, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the signal processing device 101. Further, the memory 61 may also include both an internal storage unit of the signal processing device 101 and an external storage device. The memory 61 is used to store the computer program and other programs and data required by the signal processing device 101. The memory 61 may also be used to temporarily store data that has been output or is to be output.

[0106] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0107] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0108] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0109] In the embodiments provided by the present invention, it should be understood that the disclosed device / signal processing device 101 and method can be implemented in other ways. For example, the device / signal processing device 101 embodiment described above is only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0110] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0111] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0112] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned radar mutual interference prevention method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device that can carry the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practices in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practices, computer-readable media does not include electrical carrier signals and telecommunication signals.

[0113] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A method for preventing mutual interference between radars, characterized in that: The radar includes a communication mode and a detection mode. The execution subject of the method is a signal processing device of the radar. The signal processing device sends a communication signal carrying identification information and detection working parameters of the radar in the communication mode, and sends a detection signal to detect targets in the detection mode. The method for preventing mutual interference between radars comprises the following steps: Acquire an echo communication signal, and acquire radar communication information according to the echo communication signal, wherein the radar communication information includes radar identification information and a first detection working parameter; the first detection working parameter is a working parameter of the radar corresponding to the echo communication signal in a detection mode; If the radar identification information is inconsistent with the local identification information and the first detection operating parameter is consistent with the local detection operating parameter, the local detection operating parameter is adjusted to make the local detection operating parameter different from the first detection operating parameter.

2. The method for preventing mutual interference between radars as claimed in claim 1, characterized in that: The radar includes a frequency source and a transmitter; The signal processing device sends a communication signal carrying the local identification information and the local detection working parameters in the communication mode, including: Setting the communication signal transmission band information and communication signal transmission time period; A coding generation instruction is generated according to the communication signal transmission band information and the communication signal transmission time period; and the coding generation instruction is sent to the frequency source, wherein the coding generation instruction is used to instruct the frequency source to generate a communication coding signal, and modulate the communication coding signal into the communication signal through a transmitter and then transmit it.

3. The method for preventing mutual interference between radars as claimed in claim 2, characterized in that: The local detection working parameters include the local detection signal transmission time period and the local detection signal transmission frequency band information; The step of setting the communication signal transmission band information and the communication signal transmission time period includes: If the local detection signal transmission band information is the same as the communication signal transmission band information, setting the communication signal transmission time period to be non-overlapping with the local detection signal transmission time period; If the transmission band information of the local detection signal is different from the transmission band information of the communication signal, the communication signal transmission time period is randomly set.

4. The method for preventing mutual interference between radars as claimed in claim 3, characterized in that: When the transmission band information of the local detection signal is different from the transmission band information of the communication signal, the echo communication signal is received through the first channel of the radar, and the echo detection signal corresponding to the detection signal is received through the second channel of the radar.

5. The method for preventing mutual interference between radars as claimed in claim 1, characterized in that: The radar includes a frequency source and a receiver; The acquiring radar communication information according to the echo communication signal comprises: Sending a frequency generation instruction to the frequency source in the communication mode, wherein the frequency generation instruction is used to instruct the frequency source to generate a frequency signal and send the frequency signal to the receiver; The echo coded signal returned by the receiver is acquired, and the echo coded signal is decoded to obtain the radar communication information; the echo coded signal is obtained by the receiver demodulating the echo communication signal using the point frequency signal.

6. The method for preventing mutual interference between radars as claimed in claim 1, characterized in that: The local detection working parameters include the local detection signal transmission time period and the local detection signal transmission frequency band information; The first detection working parameters include the first detection signal transmission time period and the first detection signal transmission frequency band information; The step of adjusting the detection working parameters of the local detection device includes: adjusting the local detection signal transmission period so that the adjusted local detection signal transmission period is different from the first detection signal transmission period, and / or: The local detection signal transmission band information is adjusted so that the adjusted local detection signal transmission band information is different from the first detection signal transmission band information.

7. The method for preventing mutual interference between radars as claimed in claim 1, characterized in that: The step of adjusting the detection working parameters of the local detection device includes: The corresponding working parameter variation is acquired according to the local identification information, and the local detection working parameter is adjusted by using the working parameter variation.

8. The method for preventing mutual interference between radars according to any one of claims 1 to 7, characterized in that: The radar also includes a frequency source, a transmitter and a receiver; After adjusting the local detection working parameters, the method further includes: In the detection mode, the adjusted local detection working parameters are used to generate a frequency modulation signal generation instruction, and the frequency modulation signal generation instruction is sent to the frequency source, the frequency modulation signal generation instruction is used to instruct the frequency source to generate a corresponding frequency modulation signal according to the adjusted local detection working parameters, and the frequency modulation signal is sent to the transmitter and the receiver respectively, so that the transmitter modulates the frequency modulation signal into a detection signal and then transmits it, and the receiver uses the frequency modulation signal to demodulate the echo detection signal to obtain an intermediate frequency baseband signal; The intermediate frequency baseband signal returned by the receiver is acquired, and signal processing is performed on the intermediate frequency baseband signal to obtain radar detection data.

9. A signal processing device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method for preventing mutual interference between radars as described in any one of claims 1 to 8 are implemented.

10. A radar, characterized in that: include: A transmitter, a receiver, a frequency source, a transmitting antenna, a receiving antenna and a signal processing device as claimed in claim 9; The signal processing device is connected to the receiver and the frequency source respectively; the frequency source is connected to the transmitter and the receiver respectively; The transmitter is connected to the transmitting antenna, and the receiver is connected to the receiving antenna.

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